Noise-quieting nozzle



BEST AVAILADLE COP" F. C. GURIE.

Nnise-Quieting Nozzle.

Patented April 27, 1880.

BEST AVAILABLE COP UNITED STATES PATENT OFFICE.

FREDERICK O. GUltlE, OF LYKENS, PENNSYLVANIA.

NOISE-QUIETING NOZZLE.

SIECIFIQCATION forming part of Letters Patent No. 226,905, dated April 27, 1880.

' Application tiled September 2), 1971!.

T9 all whom it may concern Be itknown that. I, Fmmam'cn' CHARLES CURIE, of Lykens, in the county of Dauphin and State of Pennsylvania, have invented cer-. ta-in new aiuluseful Improvements in Noise- Qnietmg Steam-Nozzles, of which the follow ing is a specification.-

The invention relates to nozzles for the escape of steam or gases under pressure, wherein means are provided for quieting the puiling and roaring noise attending such escape. i am aware that, pebbles and the like material have been used in the cylinder ot' the nozzle to dissipate the noise of the escaping steam, and that a perforated diaphragm has been used to support said mass of pebbles-for such purpose; but my invention contemplates improvements in the construction of the nozzle which look to increasing the noisemutiling capaeityof the device.

Mysaid improvements consist, principally, in

providing a. bottom and top chamber lilled with pebbles,- supported upon perform-ted diaphragms, and isolating these two chambers by an intermediate chamber.

The said improvements also consist in combiuing with the perforated diaphragnnof the bottom chamber a reticulated or gauze grating or screen of finer meshes than the diaphragmopenings proper, so that the finer particles maynot fall into and clog the openings ofthe diaphragm, nor through them.

The main object of the improvement is to provide increased means of mufiiing the noise of escaping steam by cansin g the steam to pass first into a pebble-filled chamber, thence into an intermediate unfilled chamber, and finally through a superimposed pebble-filled chamber, through which it has its exit. In attaining this object I have made certain novel constructions, which shall be hereinafter described and claimed.

In the accompanying drawings, Figure '1 represents an elevation of a steam-nozzle embracing my invention; Fig. 2, a vertical section; and Fi 3, a horizontal section taken at the line of Fig. 2, showing the relation of the grating-screen with the perforated baseplate.

The following is a literal description of a noise-mufiier embracing my invention The base A is provided with a screw-thrcaded opening, or a mule screw. for attachment to the boiler, commnnicating iviih a chamber, B, about one-halt inch in height (assuming the whole device to be eighteen inches high by live inches in diameter) and oi'a'diamcter the same as theinsidcot'nozzle. A diaphragm, l'orins the top of this chamlmr, and is perlbrated by a. numheroi'one-ionrth-inch holes, a, while above this diaphragm, either separatedby suitable devices or llal. upon it, is a screen or brass-wire gauze-,1), and upon this gauze or screen the tillinfloi' pebbles c in the chamber l) rests. This prevents the smaller pebbles l'roin clogging and dropping through the holes of the diaphragm. '.lihecha-mbcr l) is capped by a perl'oraled diaphragm, 1". similar to the bottom diaphragm, or a simple screen might answer. Above this diaphragm l) is u-ehamber. l*, a.bout an inch in height, and separated from the bot.- tom perforated diaphragm (l of the toppebbiefilled chamber, II, by a collar, d, or other support. This chamber F is not tilled with any material, but is an empty space.- The pebblefilled chamber ll is topped by a brass-wire screen, I, and above this screen is a space, 1, or chamber one-tburth inch in height, capped by the nozzle-cap K, also perl'ointed, and united to the nozzle by steam-light. packing or recessed joint.

The two filled chambers, which are separately cast cylinders, united by steam-tight joints ff, which, in their lapping, form the sides of the intermediate empty chamber, F, are drawn firmly together and held in place bya bolt, L, headed at 1 below the bottom diaphragm of the lower tilled chamber, and secured at the top by a nut, M, tightly screwed down, making a cmivenient. construction, which, however, may be varied. The nozzle is screwed upon a connecting-pipe leading from the safety-valve of any boiler, whether of and as the surplus steam from the boiler cscapes it passes through thepassa-ge in the base Ain an upward direction through the holes a of the diaphragm G, thence upward in minute divisions through the mass of pebble-stones c in the chamber D,'a-ud through the grating E, reunites in the intermediate chamber, F, passing thence through theholcs in thebottom dialocomotive, steamboat, or stationary engines,

air.

5 My improvement reduces the noise of escaping steam at least fifty per cent. more than any nozzle that; I know of.

By having two filled chambers with an intermediate space 1 effect a greater division 'roaud-separation and condensation of the volume of escaping steam, and consequently greatlyreducing the noise.

1 have in use anozzle five inches in diame- .ter by fifteen inches long on a three-and-a-halfinch discharge-pipe from the boiler, and with a boiler-pressure of one hundred and twenty pounds, the noise of escaping steam is so slight as not to interfere with conversation on or about the locomotive. This advantage is due to 'the two filled chambers, one upon the other,

and-intensified in noise-muffling capacity by the intermediate chamber.

In experimenting with my nozzle of the size described Ltiiid there is not much back-pressure. I have tried iton a locomotive with eight and a half by three and ten-twelfths feet, firebox burning anthracite coal, and while standiug still steam will escape faster than it is made in the boiler.

The apparatus is both simple and cheap in construction and requires but few repairs.

The intermediate non-filled chamber'is of vital importance i n cfi'ectin g the results described, partly by increased condensation and as 21 ruedium for reuniting the currents of steam from the lower mufiling-chamber, in its passage from which middle chamber it is again divided into minute streams so much reduced in force in its passage through the upper muflfiingchamber.

sss'r AVAiLABLE cos I claim- 1. In a noise-q uietin g steam-nozzle, the combination, with the lower pebble-filled chamber, D, the in termediate empty chamber, F, and the upper pebble-filled chamber, H, of the entrance chamber B, substantially as described.

2. In a noise-quietiu g steam-nozzle, the combination, with an upper and a lower chamber, each filled with pebbles or the like, of an intermediate empty communicating chamber, substantially as described. 3. Inanoise-quietingsteamnozzle,thechamber filled with pebbles and provided with a screen, in combination with the.,perforated supporting-diaphragm, for the purpose of pre venting the clogging of the holes of said diaphragm by small particles of the pebbles, substantially as set forth.

4. In a noise-mufiierfor steam or gas under pressure, the combination, with an upper and a lower chamber filled with mufliing material and communicating by a non-filled chamber, ofa divided cylinder forming the upper and lower chamber parts, united by a steamtight joining, the center connecting-rod, and the clamp-nut, substantially as herein set forth.

5. As a means of suppressing or muifiing the noise of escaping steam, a nozzle consist ing of an upper and alower tilled chamber, D H, communicating by a non-filled intermediate chamber, F, an attaching-base, A, a bottom diaphragm, 0, covered with a screen, b, and a perforated cover, K, substantially as herein set forth.

Intestimony whereof I have hereunto set my hand in the presence of two witnesses.

'FREDERICK CHARLES OURIE.

Witnesses:

R. G. PEEBLEs, E. H. WrLLsoN. 

